Volcanoes

18 volcanoes in the USA are classified as “very high threat”, many are in the Pacific Northwest. The United States has 161 young, active volcanoes within its borders. Since 1980, there have been 120 eruptions and 52 episodes of notable volcanic unrest at 44 U.S. volcanoes. The U.S. Geological Survey systematically assesses U.S. volcanoes considered to…

The volcanic island of Krakatau (previously called Krakatoa) is situated in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung. The name is also used for the surrounding island group comprising the remnants of a much larger island of three volcanic peaks which was obliterated in a cataclysmic 1883 eruption. In 1927, a new island, Anak Krakatau, or “Child of Krakatoa”, emerged from…

The Katla volcano, hidden beneath the ice cap of Mýrdalsjökull glacier in Iceland, has historically erupted violently once every 40-80 years. In-as-much as it’s last such eruption took place one hundred years ago, in 1918, Katla’s next eruption is long overdue. An eruption in Katla would dwarf the 2010 Eyjafjallajökull eruption, scientists have warned. A…

From the “this can’t be good” department and AFP: An Indonesian volcano known as the “child” of the legendary Krakatoa erupted on Thursday, spewing a plume of ash high into the sky as molten lava streamed down from its summit. Anak Krakatau—a small volcanic island that emerged from the ocean a half century after Krakatoa’s…

Story by David Rothery Professor of Planetary Geosciences, The Open University Kilauea, the most active volcano on Hawaii, has been in continual eruption since 1983. It entered a new phase in early May when fractures along a rift on the eastern side of the volcano opened during a series of earthquakes – some of which became volcanic fissures…

Guest Post by Willis Eschenbach [See Update at end] As readers of my posts know, I’ve held for many years that there are a variety of emergent phenomena that regulate the earth’s temperature. See my posts The Thermostat Hypothesis and Emergent Climate Phenomena for an overview of my hypothesis. One of the predictions derivable…

Aerial Survey of River of Lava as it Flows Down Valley in Hawaii ﻿ Footage from an Hawaii Army National Guard survey of the Kilauea eruption. Starting with fissure eight, that has developed a sizable cone around it and is sending channelized lava down to Kapoho. The lava river is at this time well over…

In early May 2018, an eruption on Hawaii’s Kilauea volcano began to unfold. Here’s what satellites saw in the first few weeks of the eruption. This video is a compendium of satellite views from NASA and other sources that tell the story of the eruption over the last month. For more details about these images,…

From the AGU and the “lava tooting” department VOLCANO MUSIC COULD HELP SCIENTISTS MONITOR ERUPTIONS WASHINGTON — A volcano in Ecuador with a deep cylindrical crater might be the largest musical instrument on Earth, producing unique sounds scientists could use to monitor its activity. New infrasound recordings of Cotopaxi volcano in central Ecuador show that…

Guest Post by Willis Eschenbach Inspired by Richard Keen’s interesting WUWT post on using eclipses to determine the clarity of the atmosphere, I went to the website of the Hawaiian Mauna Loa Observatory. They have some very fascinating datasets. One of them is a measurement of direct solar radiation, minute by minute, since about 1980. I…

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